The Internal Revenue Service (IRS) heads into the 2026 tax season with deep staff losses and complex new tax laws, prompting a warning that filers may face tougher hurdles if they hit problems. She added: "Among the reasons the 2025 filing season went well was that the IRS had its largest workforce in many years and faced no major tax law changes that required implementation during the filing season. Bisignano said: "The Internal Revenue Service is ready to help taxpayers meet their tax filing and payment obligations during the 2026 filing season. "As always, the IRS workforce remains vigilant and dedicated to their mission to serve the American taxpaying public. Bessent said: "President Trump is committed to the taxpayers of this country and improving upon the successful tax filing season in 2025.